Real-time data
Extended market hours data for U.S. markets is available from 7:00 AM to 8:00 PM ET with a Pro plan or higher. Access this data via:
API: 1-minute, 5-minute, 15-minute, or 30-minute intervals.
WebSocket: Real-time streaming.
To include pre- and post-market data, add the &prepost=true parameter to the following endpoints: /time_series, /quote, /price, and /eod.
Historical data
Extended hours data, covering the full trading schedule from 4:00 AM to 8:00 PM ET, is available for records older than one day.